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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.114 LDRES (Load Word Data in Memory to Resource)
Transfers the word data at the address indicated by "Ri" to the resource on channel "u4".
Increments the value of "Ri" by 4.
■ LDRES (Load Word Data in Memory to Resource)
Assembler format: LDRES @Ri+, #u4
Operation: (Ri) → Resource on channel u4
Ri + 4 → Ri
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: a cycle(s)
Instruction format:
Example: LDRES @R2+, #8
NZVC
––––
MSB LSB
10111100 u4 Ri
8 765 43 21
8 765 43 21
8 765 43 21
R2
ch.8 Resourcech.8 Resource
xxxx xxxx
12345678
1234567C
12345678
1234567C
123 4 5678
R2
123 4 567C
Memory Memory
Before execution After execution
Instruction bit pattern : 1011 1100 1000 0010